Fixing picture glitches and freezes on the Logitech BRIO 4K webcam in Windows

At last, hopefully the answer to my BRIO blues.

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At the worst possible moment, my C920 developed a horizontal line of dead pixels. I’m due to run an online event this weekend and I can’t do that without a half-decent webcam. But, with the lockdown in full effect, it seems that everyone has scrambled to buy them, and they’re out of stock everywhere – including Logitech’s own store. The RMA process is likely to take weeks, and I don’t have the luxury of waiting that long. I managed to find a BRIO 4K Stream Edition in stock at a rather inflated price, but with next-day delivery, so I reluctantly bought it.

This webcam is not very good. Logitech have really pushed to get a 4K picture, at the expense of poor reliability and compatibility. It’s clearly a first attempt.

The first issue I ran into was a glitchy picture. I plugged it in and it seemed to work, albeit…

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